Warm temperatures in February have taken a toll on winter snowpack in the Cascade Mountains and other areas in the West.

The Natural Resources Conservation Service said Wednesday that nearly a third of monitoring sites in the Cascades and Sierra Nevada reported the lowest snowpack ever measured as of March 1, and some sites didn't have snow.

The National Weather Service says the city broke records for average high temperatures, warmest average low temperatures and warmest average temperature. The region also received more rain than usual.

The average high temperature in Boise was 53.2 degrees. That broke a record set in 1992 by a half degree. The previous record for average lows was set in 1983. The previous record for warmest average temperature in a February was set in 1963.

So far, February is turning out to be an unusually warm month in southern Idaho. According to the National Weather Service (NWS), temperatures for the first two weeks of the month have been 10 degrees above normal and have included two record-breaking high temperatures.

NWS Boise hydrologist Troy Lindquist says a wet and cooler spring would help the situation, and an early mountain snowmelt makes this year's water picture less sustainable.

If you've ever wondered what it's like to watch a mountain lake freeze before your eyes, you're in luck. A timelapse video of Redfish Lake shows the ice creeping across the water in a matter of seconds.

Update, 9:15 a.m.: The National Weather Service has issued a winter weather advisory for much of southern Idaho and southeastern Oregon. The advisory will take effect late Wednesday afternoon as a cold front blows through.

Treasure Valley commuters navigated dense fog Friday morning, and more fog could be on the way for early Sunday.

A National Weather Service Boise forecaster just happened to climb Table Rock as the fog rolled through the eastern part of the valley. The forecaster pulled out his iPhone and captured a neat perspective on Friday morning's fog.

The Ada County Highway District (ACHD) is defending itself from criticisms over how it cleared -- or didn't clear -- the roads after last week's snow dump. A record-setting 7.6 inches of snow fell at the Boise Airport on Thursday and Friday.

Police departments tweeted warnings to drivers to mind the conditions after helping hundreds of vehicles involved in fender-benders and spins off the road.

Now, almost a week later, many major roads in Boise, Eagle, and Meridian still have snow and ice in patches and many drivers are complaining about why it's taken so long to clear.

Treasure Valley residents still dealing with the aftermath of last week's record-setting snowfall now have an inversion on their hands, too.

The National Weather Service in Boise says the inversion set up Sunday. Meteorologist Bill Wojcik says it's likely to last through Saturday when winds from a new system disrupt the layering of warm air over cold. He says the inversion - the first of the season - reaches 10,000 feet into the atmosphere.

The first major winter storm of the season is headed for Idaho, Montana and Wyoming, bringing with it the season's first hard freeze and snowfall to the Treasure Valley.

There’s a good chance of snow on Thursday in the Boise area.

National Weather Service Meteorologist Les Colin says an arctic air mass is coming in from central Canada.

“There was a typhoon whose remnants went up into the Bering Sea,” Colin says, “and it created an intense storm there and the consequences spread into North America and then down south into Canada and into the United States.”